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1 ;; @(#) crisp.el -- CRiSP/Brief Emacs emulator
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3 ;; Author: Gary D. Foster <Gary.Foster@corp.sun.com>
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4 ;; $Revision: 1.2 $
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5 ;; Keywords: emulations brief crisp
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6
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7 ;; This file is part of GNU Emacs.
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8
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9 ;; GNU Emacs is free software; you can redistribute it and/or modify
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10 ;; it under the terms of the GNU General Public License as published by
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11 ;; the Free Software Foundation; either version 2, or (at your option)
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12 ;; any later version.
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13
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14 ;; GNU Emacs is distributed in the hope that it will be useful,
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15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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17 ;; GNU General Public License for more details.
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18
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19 ;; You should have received a copy of the GNU General Public License
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20 ;; along with GNU Emacs; see the file COPYING. If not, write to the
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21 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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22 ;; Boston, MA 02111-1307, USA.
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23
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24 ;; CRiSP is a registered trademark of Foxtrot Systems Ltd.
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25
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26 ;;; Commentary:
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27
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28 ;; Keybindings and minor functions to duplicate the functionality and
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29 ;; finger-feel of the Crisp/Brief editor. This package is designed to
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30 ;; facilitate transitioning from Brief to (XE|E)macs with a minimum
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31 ;; amount of hassles.
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32
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33 ;; Enable this package by putting the following in your .emacs
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34 ;; (require 'crisp)
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35 ;; and use M-x crisp-mode to toggle it on or off.
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36
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37 ;; This package will automatically default to loading the scroll-lock.el
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38 ;; package unless you put (setq crisp-load-scroll-lock nil) in your
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39 ;; .emacs. If this feature is enabled, it will bind meta-f1 to the
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40 ;; scroll-lock mode toggle.
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41
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42 ;; Also, the default keybindings for brief override the meta-x key to
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43 ;; exit the editor. If you don't like this functionality, you can
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44 ;; prevent this key from being rebound with
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45 ;; (setq crisp-override-meta-x nil) in your .emacs.
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46
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47 ;; Finally, if you want to change the string displayed in the modeline
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48 ;; when this mode is in effect, override the definition of
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49 ;; `crisp-mode-modeline-string' in your .emacs. The default value is
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50 ;; " *Crisp*" which may be a bit lengthy if you have a lot of things
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51 ;; being displayed there.
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52
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53 ;; All these overrides should go *before* the (require 'crisp) statement.
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54
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55 ;; local variables
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56
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57 (defvar crisp-mode-map (copy-keymap (current-global-map))
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58 "Local keymap for CRiSP mode.
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59 All the bindings are done here instead of globally to try and be
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60 nice to the world.")
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61
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62 (defvar crisp-mode-modeline-string " *CRiSP*"
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63 "String to display in the modeline when CRiSP mode is enabled.")
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64
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65 (defvar crisp-mode-original-keymap (copy-keymap (current-global-map))
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66 "The original keymap before CRiSP mode remaps anything.
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67 This keymap is restored when CRiSP mode is disabled.")
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68
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69 (defvar crisp-mode-enabled 'nil
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70 "Track status of CRiSP mode.
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71 A value of nil means CRiSP mode is not enabled. A value of t
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72 indicates CRiSP mode is enabled.")
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73
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74 (defvar crisp-override-meta-x 't
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75 "Controls overriding the normal Emacs M-x key binding.
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76 The normal binding for M-x is `execute-extended-command', however
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77 the normal CRiSP keybinding for M-x is to exit the editor, while
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78 the F10 key is used to execute extended commands. If you don't
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79 want M-x to dump you out of emacs, set this to nil before loading
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80 the package.")
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81
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82 (defvar crisp-load-scroll-lock 't
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83 "Controls loading of the Scroll Lock minor mode package.
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84 Default behavior is to load the scroll lock minor mode
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85 package when CRiSP mode is enabled. Set to nil prior
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86 to loading this package to prevent it.")
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87
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88 (defvar crisp-load-hook nil
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89 "Hooks to run after CRiSP mode is enabled.")
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90
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91 (defvar crisp-mode-running-xemacs (string-match "XEmacs\\Lucid" emacs-version))
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92
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93 (if crisp-mode-running-xemacs
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94 (add-minor-mode 'crisp-mode-enabled crisp-mode-modeline-string)
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95 (or (assq 'crisp-mode-enabled minor-mode-alist)
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96 (setq minor-mode-alist
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97 (cons '(crisp-mode-enabled crisp-mode-modeline-string) minor-mode-alist))))
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98
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99 ;; and now the keymap defines
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100
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101 (define-key crisp-mode-map [(f1)] 'other-window)
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102
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103 (define-key crisp-mode-map [(f2) (down)] 'enlarge-window)
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104 (define-key crisp-mode-map [(f2) (left)] 'shrink-window-horizontally)
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105 (define-key crisp-mode-map [(f2) (right)] 'enlarge-window-horizontally)
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106 (define-key crisp-mode-map [(f2) (up)] 'shrink-window)
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107 (define-key crisp-mode-map [(f3) (down)] 'split-window-vertically)
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108 (define-key crisp-mode-map [(f3) (right)] 'split-window-horizontally)
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109
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110 (define-key crisp-mode-map [(f4)] 'delete-window)
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111 (define-key crisp-mode-map [(control f4)] 'delete-other-windows)
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112
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113 (define-key crisp-mode-map [(f5)] 'search-forward-regexp)
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114 (define-key crisp-mode-map [(f19)] 'search-forward-regexp)
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115 (define-key crisp-mode-map [(meta f5)] 'search-backward-regexp)
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116
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117 (define-key crisp-mode-map [(f6)] 'query-replace)
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118
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119 (define-key crisp-mode-map [(f7)] 'start-kbd-macro)
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120 (define-key crisp-mode-map [(meta f7)] 'end-kbd-macro)
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121
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122 (define-key crisp-mode-map [(f8)] 'call-last-kbd-macro)
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123 (define-key crisp-mode-map [(meta f8)] 'save-kbd-macro)
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124
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125 (define-key crisp-mode-map [(f9)] 'find-file)
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126 (define-key crisp-mode-map [(meta f9)] 'load-library)
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127
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128 (define-key crisp-mode-map [(f10)] 'execute-extended-command)
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129 (define-key crisp-mode-map [(meta f10)] 'compile)
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130
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131 (define-key crisp-mode-map [(SunF37)] 'kill-buffer)
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132 (define-key crisp-mode-map [(kp-add)] 'x-copy-primary-selection)
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133 (define-key crisp-mode-map [(kp-subtract)] 'x-kill-primary-selection)
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134 (define-key crisp-mode-map [(insert)] 'x-yank-clipboard-selection)
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135 (define-key crisp-mode-map [(f16)] 'x-copy-primary-selection) ; copy on Sun5 kbd
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136 (define-key crisp-mode-map [(f20)] 'x-kill-primary-selection) ; cut on Sun5 kbd
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137 (define-key crisp-mode-map [(f18)] 'x-yank-clipboard-selection) ; paste on Sun5 kbd
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138
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139 (define-key crisp-mode-map [(meta d)] (lambda () (interactive) (beginning-of-line) (kill-line)))
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140 (define-key crisp-mode-map [(meta e)] 'find-file)
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141 (define-key crisp-mode-map [(meta g)] 'goto-line)
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142 (define-key crisp-mode-map [(meta h)] 'help)
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143 (define-key crisp-mode-map [(meta i)] 'overwrite-mode)
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144 (define-key crisp-mode-map [(meta u)] 'advertised-undo)
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145 (define-key crisp-mode-map [(f14)] 'advertised-undo)
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146 (define-key crisp-mode-map [(meta w)] 'save-buffer)
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147 (if
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148 (eq crisp-override-meta-x 't)
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149 (define-key crisp-mode-map [(meta x)] 'save-buffers-kill-emacs))
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150
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151 (define-key crisp-mode-map [(shift right)] 'fkey-forward-word)
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152 (define-key crisp-mode-map [(shift left)] 'fkey-backward-word)
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153 (define-key crisp-mode-map [(shift delete)] 'kill-word)
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154 (define-key crisp-mode-map [(shift backspace)] 'backward-kill-word)
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155 (define-key crisp-mode-map [(control left)] 'backward-word)
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156 (define-key crisp-mode-map [(control right)] 'forward-word)
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157
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158 (define-key crisp-mode-map [(home)] 'crisp-home)
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159 (define-key crisp-mode-map [(end)] 'crisp-end)
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160
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161 (defun crisp-home ()
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162 "Home the point according to CRiSP conventions.
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163 First call to this moves point to beginning of the line. Second
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164 consecutive call moves point to beginning of the screen. Third
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165 consecutive call moves the point to the beginning of the buffer."
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166 (interactive nil)
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167 (cond
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168 ((and (eq last-command 'crisp-home) (eq last-last-command 'crisp-home))
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169 (goto-char (point-min)))
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170 ((eq last-command 'crisp-home)
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171 (move-to-window-line 0))
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172 (t
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173 (beginning-of-line)))
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174 (setq last-last-command last-command))
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175
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176 (defun crisp-end ()
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177 "End the point according to CRiSP conventions.
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178 First call to this moves point to end of the line. Second
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179 consecutive call moves point to the end of the screen. Third
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180 consecutive call moves point to the end of the buffer."
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181 (interactive nil)
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182 (cond
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183 ((and (eq last-command 'crisp-end) (eq last-last-command 'crisp-end))
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184 (goto-char (point-max)))
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185 ((eq last-command 'crisp-end)
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186 (move-to-window-line -1)
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187 (end-of-line))
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188 (t
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189 (end-of-line)))
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190 (setq last-last-command last-command))
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191
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192 ;; Now enable the mode
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193
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194 (defun crisp-mode ()
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195 "Toggle CRiSP minor mode."
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196 (interactive nil)
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197 (setq crisp-mode-enabled (not crisp-mode-enabled))
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198 (cond
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199 ((eq crisp-mode-enabled 't)
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200 (use-global-map crisp-mode-map)
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201 (if crisp-load-scroll-lock
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202 (require 'scroll-lock))
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203 (if (featurep 'scroll-lock)
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204 (define-key crisp-mode-map [(meta f1)] 'scroll-lock-mode))
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205 (run-hooks 'crisp-load-hook))
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206 ((eq crisp-mode-enabled 'nil)
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207 (use-global-map crisp-mode-original-keymap))))
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208
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209 (provide 'crisp)
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210
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211 ;;; crisp.el ends here
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